Subscribe To This Site
XML RSS
Add to Google
Add to My Yahoo!
Add to My MSN
Subscribe with Bloglines
Home
Central Ac Blog
How Ac Works
Ac Maintenance
Drain Line
Tech Tips
YOUR Reviews
Trane Ac
Carrier hvac
Goodman Ac
York Hvac
Bryant Hvac
 Lennox Ac
Rheem Ac
Heil Hvac
Tempstar Hvac
Sears Ac
Ruud Ac
Amana Hvac
Gibson Hvac
American Standard
Janitrol Ac
Armstrong Hvac
Discussion
AC Question
Central Air Cost
Hvac Problems
Ac Smells Forum
 Ac Ice Discuss It
Ac Noise
Serial and Model
-
Privacy Policy
Site Map

MY AC RUNS BUT NOT ENOUGH AIR COMES OUT OF THE VENTS

by Christina
(Chicago)

We recently had our Trane serviced, freon added, pressure checked, new fan motor installed on outside unit, furnace coils have been cleaned but, every time we turn on the air it starts out at about 70% of where it should be and then slowly dissipates to almost no air pressure. The air is cool but it just doesn't seem to be blowing enough air through the vents. Help!

Comments for
MY AC RUNS BUT NOT ENOUGH AIR COMES OUT OF THE VENTS

Average Rating starstarstarstarstar

Click here to add your own comments

Sep 22, 2011
Rating
starstarstarstarstar
Air not blowing hard enough
by: Anonymous

I recently moved to an older apartment where the unit is in an oblonged rectangular shape. The A.C. repair man came, checked the blower (which was blowing great out of the wall ) and then put it back and scratched his head and left. Ummm ok.


The second worker came and said the coils were dirty. So the used some type of clear which seemed to help a little bit but could have been done again. I found out there was a woman in here for 20yrs who was a heavy smoker (ewww gross) and I m certain my coils are clogged with the same crap that killed the ol bat.

I used a mild bleach and water solution to spray on the coils.. It turned them back to silver anyway and seem to help a little bit. I was getting condensation all along the wall vent.

drip ... drip... the vent was cold to the touch yet weak air pressure if any to blow it out. I have one in my living / dining space and one in my bedroom ... the bedroom one was working fairly good. (which was strange seeing as they are both the same unit).

Then one day we have some hurricane weather ( Irene ) and I hear loud whistling coming from the living room.. I go out and see the windows and sills are covered in water.. the window seals were old and destroyed and there was a quarter of an in. GAP under the window sill.

Well, the heat and wind was blowing through this gap and the rain water and heat was coming through the windows. My point here... after 2 prof. A.C. repair men where here, not finding or curing the problems with this room being much warmer, I discover the real problem was the leaking windows an poor craftsman ship on wall under window.

Make sure you are not having a problem with windows and doors and other places your cool air can escape the room before calling the repair man. While I do think my coils are not working the best and most likely do need to be changed.

I also now know that poor insulation and cracks in walls can def cause a room to not meet its full cooling potential. Now... I am having brand new windows installed next week, have sealed up the huge gap under the window and am curious to see how the winter heat goes. hahahaha oh boy.
Ciao

Aug 29, 2011
Rating
starstarstarstarstar
List of thing that cause less airflow
by: Dadan

You have airflow problem. Here list of thing that can cause airflow problem. This is just the top of my head

1) The blower motor is running slow, it gone bad
2) Leak duct work or restriction air in the duct work
3) Unclean and dirty evaporator coil
4) If your central air unit is old, it possible the blade is missing or broke
5) If your blower is variable speed motor, someone could switch the speed, (I doubt)
6) The blower could have dirt/particle in it.

Hope I help

Dadan

Aug 29, 2011
Rating
starstarstarstarstar
low air flow in some vents
by: Anonymous

I'm having an issue with some of my central air vents not blowing much air. there are 2 out of 10 that the air flow is low causing the rooms to get hot during the day. What can that be?

Jul 12, 2011
Rating
starstarstar
evaporator drain could be plugged
by: Anonymous

On my system, I found out the drain was plugged causing my evaporator to ice over. Like a old refrigerator without automatic defrost, I had to thaw it out manually. Cleaned the drain and spayed the coils with evaporator cleaner and it's been good.

This is easy to check, when the flow drops... remove you evaporator cover and check for icing.

Jun 16, 2011
Rating
starstarstarstarstar
answer
by: Anonymous

it could be your coils or fan is on low speed or dblower fan is dirty or your return air is blocked

Jun 05, 2011
Rating
starstarstarstarstar
Same
by: Travis

I am having the same problem. IT blow cool strong air at first then the air stops flowing eventhough everything is still running. If I leave it off for 8-10 hour runs fine again then looses air pressure.

Dec 29, 2010
Rating
starstarstarstarstar
problemas de soplado de la unidad interior
by: Anonymous

Hola mi unidad interior tiene problemas con el soplado tira poco viento el aire es bien frio pero no llega a exsparsirse x toda la casa se queda solo en una parte quien sepa de algo parecido mandeme un comentario

Click here to add your own comments